import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.temporal.ChronoUnit;

class Gigasecond {
    private LocalDateTime birthDateTime;

    Gigasecond(LocalDate birthDate) {
        this.birthDateTime = LocalDateTime.of(
                birthDate,
                LocalTime.of(0, 0, 0)
        );
    }

    Gigasecond(LocalDateTime birthDateTime) {
        this.birthDateTime = birthDateTime;
    }

    LocalDateTime getDate() {
        return this.birthDateTime.plusSeconds((long)Math.pow(10, 9));
    }
}
